Let's bring some numbers into this.
Australia is more or less the same size as the US (minus Alaska).
It has a population less than Texas.
All of which, minus a city or two, sits on the coast, primarily on the East side of the country.
The average farm size for USA is 170ha, UK has 57ha, and continental Europe is 20ha, while in Australia it is 3,300ha[1].
I mean, yes, 3 million acres is f***ing huge, but it's only #9 in the list of largest stations in Australia, the largest sits just shy of 7 million acres.[2]